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Carnot Cycle

The coefficie...

Question

The coefficient of performance of a Carnot refrigerator working between $30^{\circ} C$ and $0^{\circ} C$

A

10

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B

1

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C

9

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D

0

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Solution

The correct option is C
9

Coefficient of performance

$K = \frac{T_{2}}{T_{1} - T_{2}} = \frac{273}{303 - 273} = \frac{273}{30} = 9$

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